public class jichu2 {
    public static void main(String[] args) {
        System.out.println("hello world");
        System.out.println(printname());
    }
    public static String printname()
    {
        String[] names=new String[] {"张三","李四","王五"};
        String name=names[(int)Math.random()*names.length];
        return name;
    }
}
